Ckeditor4: CKEditor's internal iframe gets hidden depending on page URL... ?

[remi00]

Are you reporting a feature request or a bug?

Bug
...but it definitely requires triage and assessment, as it may be working as designed for some reason, or be a known (config/env?) issue. It sounds too weird not to be related with some configuration, that I'm unaware of...

Provide detailed reproduction steps

1. Configure CKEDITOR to replace textarea (any method: CKEDITOR.replace, or jquery.ckeditor()) with basic config, standard package
2. Now, navigate to the page including CK Editor instance with query string including ampersand character (e.g.: http://localhost/?id=foo&bar=1). If the query string won't include ampersand (e.g. http://localhost/?id=foo), the issue won't reproduce...

Expected result

CK Editor instance shall provide editing capabilities and present edited content.

Actual result

The wysiwyg editor does not show content nor provides any editing capabilities. Interestingly, iframe with content gets hidden / display: none:

<iframe src="" frameborder="0" class="cke_wysiwyg_frame cke_reset" title="Rich Text Editor, qq" aria-describedby="cke_51" tabindex="0" allowtransparency="true" style="width: 100%; height: 100%; display: none !important;" hidden></iframe>

Other details

• Browser: Chrome 63, Firefox 57
• OS: Linux, should not matter
• CKEditor version: latest stable v4.8.0 and nightly from 20-Dec-2017 at 15:09 UTC.

• It does not reproduce on e.g. nightly.ckeditor.com online provided samples.

• Installed CKEditor plugins: Standard package.

[remi00]

Not an issue, after wasting almost 3hrs I realized it was the ad-blocker plugin causing the issue....

[koddistortion]

@remi00 thank you very much for point that out. I had the exact same issue yesterday and wasted 4 hours with debugging JS code, DOM inspecting etc. until I found this issue and your "solution".